<template>
  <div class="login">
    <div class="box">
      <div class="left hidden-sm-and-down">CD助手</div>
      <div class="right">
        <el-form
          ref="loginForm"
          :model="loginForm"
          :rules="loginRules"
          class="login-form"
        >
          <div class="title">登 录</div>
          <el-form-item prop="username">
            <el-input
              v-model="loginForm.username"
              type="text"
              auto-complete="off"
              placeholder="用户名"
            >
              <svg-icon
                slot="prefix"
                icon-class="user"
                class="el-input__icon input-icon"
              />
            </el-input>
          </el-form-item>
          <el-form-item prop="password">
            <el-input
              v-model="loginForm.password"
              type="password"
              auto-complete="off"
              placeholder="密码"
              @keyup.enter.native="handleLogin"
            >
              <svg-icon
                slot="prefix"
                icon-class="password"
                class="el-input__icon input-icon"
              />
            </el-input>
          </el-form-item>
          <el-form-item prop="code" v-if="captchaEnabled">
            <el-input
              v-model="loginForm.code"
              auto-complete="off"
              placeholder="验证码"
              style="width: 63%"
              @keyup.enter.native="handleLogin"
            >
              <svg-icon
                slot="prefix"
                icon-class="validCode"
                class="el-input__icon input-icon"
              />
            </el-input>
            <div class="login-code">
              <img :src="codeUrl" @click="getCode" class="login-code-img" />
            </div>
          </el-form-item>
          <!-- <el-checkbox
            v-model="loginForm.rememberMe"
            style="margin: 0px 0px 25px 0px"
            >记住密码</el-checkbox
          > -->
          <div style="margin: 0px 0px 50px 0px"></div>
          <el-form-item style="width: 100%">
            <el-button
              :loading="loading"
              size="medium"
              type="primary"
              style="width: 100%"
              @click.native.prevent="handleLogin"
            >
              <span v-if="!loading">登 录</span>
              <span v-else>登 录 中...</span>
            </el-button>
            <div style="float: left; margin-top: 10px" v-if="register">
              <router-link class="link-type" :to="'/register'"
                >没有账号？</router-link
              >
            </div>
          </el-form-item>
        </el-form>
      </div>
    </div>
  </div>
</template>

<script>
import { getCodeImg } from '@/api/login'
import Cookies from 'js-cookie'
import { encrypt, decrypt } from '@/utils/jsencrypt'
import 'element-ui/lib/theme-chalk/display.css'

export default {
  name: 'Login',
  data() {
    return {
      codeUrl: '',
      loginForm: {
        username: 'admin',
        password: 'admin123',
        rememberMe: false,
        code: '',
        uuid: ''
      },
      loginRules: {
        username: [
          { required: true, trigger: 'blur', message: '请输入您的账号' }
        ],
        password: [
          { required: true, trigger: 'blur', message: '请输入您的密码' }
        ],
        code: [{ required: true, trigger: 'change', message: '请输入验证码' }]
      },
      loading: false,
      // 验证码开关
      captchaEnabled: true,
      // 注册开关
      register: true,
      redirect: undefined
    }
  },
  watch: {
    $route: {
      handler: function (route) {
        this.redirect = route.query && route.query.redirect
      },
      immediate: true
    }
  },
  created() {
    this.getCode()
    this.getCookie()
  },
  methods: {
    getCode() {
      getCodeImg().then((res) => {
        this.captchaEnabled =
          res.captchaEnabled === undefined ? true : res.captchaEnabled
        if (this.captchaEnabled) {
          this.codeUrl = 'data:image/gif;base64,' + res.img
          this.loginForm.uuid = res.uuid
        }
      })
    },
    getCookie() {
      const username = Cookies.get('username')
      const password = Cookies.get('password')
      const rememberMe = Cookies.get('rememberMe')
      this.loginForm = {
        username: username === undefined ? this.loginForm.username : username,
        password:
          password === undefined ? this.loginForm.password : decrypt(password),
        rememberMe: rememberMe === undefined ? false : Boolean(rememberMe)
      }
    },
    handleLogin() {
      this.$refs.loginForm.validate((valid) => {
        if (valid) {
          this.loading = true
          if (this.loginForm.rememberMe) {
            Cookies.set('username', this.loginForm.username, { expires: 30 })
            Cookies.set('password', encrypt(this.loginForm.password), {
              expires: 30
            })
            Cookies.set('rememberMe', this.loginForm.rememberMe, {
              expires: 30
            })
          } else {
            Cookies.remove('username')
            Cookies.remove('password')
            Cookies.remove('rememberMe')
          }
          this.$store
            .dispatch('Login', this.loginForm)
            .then(() => {
              this.$router.push({ path: '/' }).catch(() => {})
              // this.$router.push({ path: this.redirect || '/' }).catch(() => {})
            })
            .catch(() => {
              this.loading = false
              if (this.captchaEnabled) {
                this.getCode()
              }
            })
        }
      })
    }
  }
}
</script>

<style lang="scss" scoped>
.login {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100vw;
  height: 100vh;
  background-color: #f0f2f5;
}
.box {
  display: flex;
  justify-content: center;
  width: 1250px;
  height: 625px;
  background-color: #fff;
  box-shadow: -3px 3px 15px rgba(0, 0, 0, 0.4);
  border-radius: 6px;
  overflow: hidden;
  margin: 20px;
}
.left {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 625px;
  background-color: #17b3a3;
  font-size: 34px;
  color: #fff;
}
.right {
  width: 625px;
  display: flex;
  justify-content: center;
  align-items: center;
  .title {
    margin: 0px auto 50px auto;
    text-align: center;
    color: #333;
    font-size: 28px;
  }

  .login-form {
    border-radius: 6px;
    width: 400px;
    padding: 25px 25px 5px 25px;
    margin: auto;
    .el-input {
      height: 38px;
      input {
        height: 38px;
      }
    }
    .input-icon {
      height: 39px;
      width: 14px;
      margin-left: 2px;
    }
  }
  .login-tip {
    font-size: 13px;
    text-align: center;
    color: #bfbfbf;
  }
  .login-code {
    width: 33%;
    height: 38px;
    float: right;
    img {
      cursor: pointer;
      vertical-align: middle;
    }
  }
  .el-login-footer {
    height: 40px;
    line-height: 40px;
    position: fixed;
    bottom: 0;
    width: 100%;
    text-align: center;
    color: #fff;
    font-family: Arial;
    font-size: 12px;
    letter-spacing: 1px;
  }
  .login-code-img {
    height: 38px;
  }
}
</style>
